.center-container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center
}

.centered-box {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center
}

.justify-box {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center
}

.justify-left-box {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: left;
    -ms-flex-pack: left;
    justify-content: left
}

.justify-right-box {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: right;
    -ms-flex-pack: right;
    justify-content: right
}

.align-box {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center
}

header {
    width: 100%;
    height: 38px;
    line-height: 38px
}

.header-box {
    padding-top: 24px;
    position: relative;
    width: 940px;
    margin: 0 auto
}

.header-common {
    display: inline-block
}

.header-box .logo {
    width: 20%;
    margin-left: 1rem;
    font-size: 21px;
    color: #fff;
    cursor: pointer
}

.header-box .logo:before {
    content: "";
    height: 25px;
    width: 25px;
    display: inline-block;
    background-image: url(../img/logo.png);
    background-size: contain;
    background-position: center
}

.header-box .menu {
    position: absolute;
    right: 0;
    width: 75%
}

.header-box .menu ul {
    width: 100%;
    height: 100%;
    -webkit-box-pack: right;
    -ms-flex-pack: right;
    justify-content: right
}

.header-box .menu ul li {
    float: right;
    margin-right: 20px;
    font-size: 21px
}

.header-box .menu ul li a {
    color: #000
}

.no-scroll-style {
    scrollbar-width: 0
}

.no-scroll-style::-webkit-scrollbar {
    width: 0
}